Compass

Details Compass Compass

1975-07-30

1977-01-18

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D1004

Patent

active

D02430720

REFERENCES:
patent: 1560482 (1925-11-01), Noisom
patent: 2857734 (1958-10-01), Weigenant
patent: 3041917 (1962-07-01), Glatt
patent: 3857283 (1974-12-01), Jennings
patent: D115072 (1939-05-01), Shillaber
patent: D159416 (1950-07-01), Kahn
patent: D170184 (1953-08-01), Collins
patent: D220209 (1971-03-01), Brigham
patent: D230883 (1974-03-01), Brigham

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